Experimental and Numerical Investigation of Beach Slope Effects on the Hydrodynamic Loading of Tsunami-like Surges on a Vertical Wall

Liu, Shilong; Nistor, Ioan; Mohammadian, Abdolmajid; Azimi, Amir H.

doi:10.3390/jmse10111580

Cited by 4 publications

(1 citation statement)

References 38 publications

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“…OpenSees has a long-standing history in the civil engineering field and has been validated against experimental results countless times, providing reasonable confidence in the accuracy of the program when utilizing it for non-linear structural mechanics and dynamics. Similarly, OpenFOAM is used within the civil engineering community for CFD simulation of wind and water hazards, and has been validated against experiments involving hydrodynamic impact with great accuracy (Douglas and Nistor, 2014;Douglas et al, 2015;Motley et al, 2016;Wong, 2015;Sarjamee et al, 2017a;Sarjamee et al, 2017b;Qin et al, 2018;Qin, 2019;Winter 2019;Croquer et al, 2022;Elsheikh et al, 2022a;Elsheikh et al, 2022b;Liu et al, 2022).…”

Section: Impetus For Researchmentioning

confidence: 99%

Open-source simulation of strongly-coupled fluid-structure interaction between non-conformal interfaces

Lewis

Winter

Bonus

et al. 2023

Front. Built Environ.

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Design code-based “life-safety” requirements for structural earthquake and tsunami design offer reasonable guidelines to construct buildings that will remain standing during a tsunami or seismic event. Much less consideration has been given to assessing structural resilience during sequential earthquake and tsunami multi-hazard events. Such events present a series of extreme loading scenarios, where damage sustained during the earthquake influences structural performance during the subsequent inundation. Similar difficulties exist with respect to damage sustained during tropical events, as wind and fluid loading may vary with structural response or accumulated damage. To help ensure critical structures meet a “life-safety” level of performance during such multi-hazard events, analysis software capable of simulating simultaneous structural and fluid dynamics must be developed. To address this gap in understanding of non-linear fluid-structure-interaction (FSI), an open-source tool (FOAMySees) was developed for simulation of tsunami and wave impact analysis of post-earthquake non-linear structural response of buildings. The tool is comprised of the Open-source Field Operation And Manipulation software package and OpenSeesPy, a Python 3 interpreter of OpenSees. The programs are coupled via preCICE, a coupling library for partitioned multi-physics simulation. FOAMySees has been written to work in a Linux OS environment with HPC clusters in mind. The FOAMySees program offers a partitioned conventional-serial-staggered coupling scheme, with optional implicit iteration techniques to ensure a strongly-coupled two-way FSI solution. While FOAMySees was developed specifically for tsunami-resilience analysis, it may be utilized for other FSI applications with ease. With this coupled Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) program, tsunami and earthquake simulations may be run sequentially or simultaneously, allowing for the evaluation of non-linear structural response to multi-hazard excitation.

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Section: Impetus For Researchmentioning

confidence: 99%

Open-source simulation of strongly-coupled fluid-structure interaction between non-conformal interfaces

Lewis

Winter

Bonus

et al. 2023

Front. Built Environ.

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Experimental study of dam-break-like tsunami loads on the vertical structure with overhanging horizontal slab: Flat slab

Peng,

Chen,

Nandasena

et al. 2024

Physics of Fluids

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Tsunamis present a significant risk to coastal infrastructure. This study conducts a comprehensive experimental investigation into the effects of tsunami impacts on a vertical structure equipped with an overhanging horizontal slab. Dam-break waves were generated in the laboratory to simulate tsunami bore. The uplift pressure of the tsunami bore on the horizontal suspended slab and the horizontal pressure on the vertical wall were analyzed by combining experimental data with water flow patterns. The results revealed that the impact process could be categorized into four stages: initial impact, run-up, quasi-steady, and recession. Two characteristic pressures were identified: a maximum pressure during the initial impact stage and a quasi-steady pressure with a longer duration. The maximum uplift pressure was found to increase with the relative position and tsunami bore height. However, this trend was influenced by the slab height and gravity, particularly on the side of the slab closest to the wall. As the slab height increased, the water flow reflection area expanded, diminishing the focusing effect caused by the slab and decreasing the quasi-steady uplift pressure. The uplift coefficient was observed to decrease with an increase in the relative slab height, and a new uplift coefficient envelope was proposed based on experimental data and published articles. Equations for the uplift pressure distribution and a novel conversion method between uplift pressure and horizontal pressure were introduced. Furthermore, based on the measured data and existing theories, equations for estimating the maximum and quasi-steady uplift pressures are presented and validated using published data. These findings provide valuable insights into understanding and estimating the impact of tsunami on structures.

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An Experimental Investigation of Tsunami Bore Impact on Coastal Structures

Erduran,

Akansu,

Ünal

et al. 2024

Hydrology

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This experimental study focused on the measurement and analysis of the impact force caused by a tsunami bore on a coastal structure. The bore wave was produced by a dam break mechanism. The water depth in the reservoir and the location of the coastal structures were varied to simulate different impact scenarios. The time history of the force resulting from the impact of the bore wave on the coastal structure was measured. The propagation of the bore wave along the flume was recorded and the video recordings were converted into digital data using an image-processing technique in order to determine the flow depth variations with time. The hydrostatic forces and the corresponding depth and time-averaged hydrodynamic forces as well as the maximum hydrodynamic forces were acquired for each scenario. The ratio of hydrodynamic to hydrostatic forces were obtained, and it was observed that the calculated averaged ratio was within the recommended design ratio. The results indicate that an increase in the reservoir level caused an increase in the magnitude and intensity of the impact forces, however, the relationship was non-linear. Moreover, it was found that the location of the structure did not play a significant role on the intensity of the impact forces.

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Experimental and Numerical Investigation of Beach Slope Effects on the Hydrodynamic Loading of Tsunami-like Surges on a Vertical Wall

Cited by 4 publications

References 38 publications

Open-source simulation of strongly-coupled fluid-structure interaction between non-conformal interfaces

Open-source simulation of strongly-coupled fluid-structure interaction between non-conformal interfaces

Experimental study of dam-break-like tsunami loads on the vertical structure with overhanging horizontal slab: Flat slab

An Experimental Investigation of Tsunami Bore Impact on Coastal Structures

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